[Bug fortran/101101] New: ICE in gfc_build_array_type, at fortran/trans-types.c:1391

[Bug fortran/101101] New: ICE in gfc_build_array_type, at fortran/trans-types.c:1391

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101101

            Bug ID: 101101
           Summary: ICE in gfc_build_array_type, at
                    fortran/trans-types.c:1391
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Test case in addition to pr99138, pr99254 and pr99266,
affects versions down to at least r5 :


$ cat z1.f90
subroutine s(x)
   type t
   end type
   class(t) :: x
   dimension :: x(:)
end


$ gfortran-12-20210613 -c z1.f90
z1.f90:1:12:

    1 | subroutine s(x)
      |            1
internal compiler error: Segmentation fault
0xc7bfff crash_signal
        ../../gcc/toplev.c:327
0x82022a gfc_build_array_type
        ../../gcc/fortran/trans-types.c:1391
0x82222e gfc_get_derived_type(gfc_symbol*, int)
        ../../gcc/fortran/trans-types.c:2791
0x8229d8 gfc_typenode_for_spec(gfc_typespec*, int)
        ../../gcc/fortran/trans-types.c:1170
0x822c2e gfc_sym_type(gfc_symbol*)
        ../../gcc/fortran/trans-types.c:2281
0x821174 gfc_get_function_type(gfc_symbol*, gfc_actual_arglist*, char const*)
        ../../gcc/fortran/trans-types.c:3126
0x7bac44 build_function_decl
        ../../gcc/fortran/trans-decl.c:2386
0x7c0836 gfc_create_function_decl(gfc_namespace*, bool)
        ../../gcc/fortran/trans-decl.c:3085
0x7c6e26 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6787
0x74c876 translate_all_program_units
        ../../gcc/fortran/parse.c:6461
0x74c876 gfc_parse_file()
        ../../gcc/fortran/parse.c:6730
0x798bbf gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:212

[Bug fortran/101101] ICE in gfc_build_array_type, at fortran/trans-types.c:1391

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101101

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-07-29
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed.

Workaround: use

  class(t) :: x(:)

[Bug fortran/101101] ICE in gfc_build_array_type, at fortran/trans-types.c:1391

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101101

--- Comment #2 from G. Steinmetz <gscfq@t-online.de> ---
Alternatives :


$ cat zz1.f90
program p
   class(*), pointer :: x
   dimension :: x(:)
end


$ cat zz2.f90
program p
   class(*) :: x(:)
   pointer :: x
end


$ gfortran-12-20220123 -c zz1.f90
f951: internal compiler error: Segmentation fault
0xcc430f crash_signal
        ../../gcc/toplev.cc:322
0x672cc7 resolve_fl_var_and_proc
        ../../gcc/fortran/resolve.cc:12866
0x76ace6 resolve_fl_variable
        ../../gcc/fortran/resolve.cc:13012
0x76ace6 resolve_symbol
        ../../gcc/fortran/resolve.cc:16096
0x789642 do_traverse_symtree
        ../../gcc/fortran/symbol.cc:4174
0x76d9c4 resolve_types
        ../../gcc/fortran/resolve.cc:17455
0x768e5c gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.cc:17570
0x751194 resolve_all_program_units
        ../../gcc/fortran/parse.cc:6586
0x751194 gfc_parse_file()
        ../../gcc/fortran/parse.cc:6842
0x79e86f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:216


$ gfortran-12-20220123 -c zz2.f90
zz2.f90:4:3:

    4 | end
      |   1
internal compiler error: Segmentation fault
0xcc430f crash_signal
        ../../gcc/toplev.cc:322
0x6ee9b1 free_expr0
        ../../gcc/fortran/expr.cc:446
0x6eeb18 gfc_free_expr(gfc_expr*)
        ../../gcc/fortran/expr.cc:530
0x6b9fce gfc_free_array_spec(gfc_array_spec*)
        ../../gcc/fortran/array.cc:352
0x78fd1f free_components
        ../../gcc/fortran/symbol.cc:2606
0x78fd1f gfc_free_symbol(gfc_symbol*&)
        ../../gcc/fortran/symbol.cc:3078
0x78fe79 gfc_release_symbol(gfc_symbol*&)
        ../../gcc/fortran/symbol.cc:3127
0x78ff4e free_sym_tree
        ../../gcc/fortran/symbol.cc:3904
0x78ff3c free_sym_tree
        ../../gcc/fortran/symbol.cc:3901
0x78faf0 gfc_free_namespace(gfc_namespace*&)
        ../../gcc/fortran/symbol.cc:4043
0x790209 gfc_symbol_done_2()
        ../../gcc/fortran/symbol.cc:4105
0x728008 gfc_done_2()
        ../../gcc/fortran/misc.cc:382
0x751818 translate_all_program_units
        ../../gcc/fortran/parse.cc:6670
0x751818 gfc_parse_file()
        ../../gcc/fortran/parse.cc:6938
0x79e86f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:216

[Bug fortran/101101] ICE in gfc_build_array_type, at fortran/trans-types.c:1391

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101101

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|NEW                         |RESOLVED
                 CC|                            |anlauf at gcc dot gnu.org

--- Comment #3 from anlauf at gcc dot gnu.org ---
Duplicate.

*** This bug has been marked as a duplicate of bug 106856 ***